Metallic bedstead side-rail joint.



G. M. ROBINSON.

METALLIC BEDSTEAD SIDE RAIL JOINT.

APPLICATION IILBD 11m: 24. 1907.

wi bvwooao I PATENTED DEC. 10, 1907.

' is atop plan view of a joint embodylng my.

GEORGE M. ROBINSON, OF CHICAGO, ILLINOIS.

METALLIC BEDSTEAD SIDE- RAIL JOINT.

Specification of Letters Patent.

Patented Dec. 10, 1907.

- Application filed June 24:, 1907- Serial No. 380,508.

To all whom it may concern:

Be it known that I, GEORGE M. ROBIN- SON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Metallic Bedstead Side-Rail Joints; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improved metallic bedstead side rail joint, by means of which the usualangle iron side rail may be detachably jointed. to a corner of the bedstead with either side uppermost, so as to be used-as a regular rail to support a spring mattress having lateral corner projections to bear thereon, or as a reversed rail to enable slats to be supported on the bed rails for the purpose of supporting a spring mattress which is not provided with suchprojections, and my invention consists of the construction, combination, and arrangement of devices hereinafter described and claimed.

In the accompanying drawings, Figure 1 invention; Fig. 2 is a detail top plan view of the rail end member; Fig. 3 is a similar view of the corner member; Fig. 4 is an elevation, showing one side of the rail end member; Fig. 5 is a similarview, showing the opposite side thereof; Fig. .6 is a sectional view of one side of the corner member; and Fig. 7 is a similar view of the rail member.

The bedstead side rail a is of angle-metal, as is usual, and comprises the webs b, c. When the web bis uppermost, the rail constitutes what is known in the trade as a regular rail, adapted to support a spring mattress having lateral projections at its corners to bear on the upper sides of the rails. When the rail is reversed, so that said web I) is lowermost, the rail is what is called a reversed rail, so that slats may be placed between the rails on the web I), and with their ends presented to the web 0, to sup ort a spring mattress whichis not provided with lateral projections.

The object of my present invention is to provide a rail to be applied to a bedstead with either side u permost so that it may be used either as a regular rail or as a reversed rail.

My improved joint comprises a corner member 1 and a side Tail end member 2.

socket.

The rail end member 2 is provided with a longitudinally-tapered tongue 7, at the base of which are shoulders 8 to bear against shoulders 9 of the member 1 at the open end of the socket 3. The sides of the longitudinally-tapered tongue 7 are vertical andsaid tongue is formed at its outer end with a laterally-shouldered head 10 to enterthe inner end of the socket. Said head 10 has the laterally-projecting shoulders 11, 12 on opposite sides, the rear faces of which are oppositely-inclined, that of the shoulder 11 converging downwardlyv toward the outer end of the head, and that of the shoulder 12 converging upwardly toward the outer end of the head, so that when the rail is in place with either side uppermost, one of the said inclined shoulders of the head of the tongue will be parallelwith and engage the inclined shoulder 5 of the socket 3, and hence said shouldered head will be firmly wedged in said The sides of the head of the shoulder 7 are provided with oppositely-extending, wedge-shaped grooves13, one of which will receive the wedge-shaped tongue 6,which projects as a salient from one side of the socket 3 to coact with the engaging inclined shoulders" of the socket and tongue to firmly Wedge the tongue in place in the socket.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention willbe readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention, as defined by the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by Let ters-Patent, is,

1. A bed rail joint comprising a member having a vertical, longitudinally-tapered socket provided with lateral shoulders in opposite sides, one of said shoulders being in clined and converging downwardly toward the closed end of said socket, and a member having a vertical, longitudinally-tapered tongue provided With a laterally-shouldered head at its outer end, the shoulders of said head, on opposite sides thereof, being oppositely-inclined, so that one of them will be parallel and engaging the inclined shoulder of the socket of the first-named member when the last-named member is jointed to the first-named member with either side uppermost.

2. A. bed rail joint comprising a member having a vertical, longitudinally-tapered socket provided with lateral shoulders in opposite sides, one of which is inclined and converges downwardly toward the closed endof said socket, said socket having in the side opposite the said inclined shoulder an upwardly-tapered, wedge-shaped, salient tongue, and a member having a vertical, longitudinally-tapered tongue provided with a laterallyshouldered head at its outer end,

the shoulders of said head on opposite sides thereof being oppositely-inclined for the purpose set forth, and said head having reversely-disposed tapered, grooves in opposite sides for engagement respectively with the salient tongue of the socket ol the firstnamed member, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

GEORGE M. ROBINSON.

Witnesses JOHN J. ROBINSON, WM. M. CRANE. 

